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(No Model.) 2 Sheets-Sheet 1] P. A. IDDINGS.

CHAIN LINK DIE.

Patented June 9, 1885.

W/T/VESSES @VZZQ (No Model.) 2 Sheets-Sheet 2.

F. A. IDDINGS.

CHAIN LINK DIE.

No. 319,724. Patented June 9, 1885.

WITNESSES MEMO dated June 6, 1871, and No. 146,374, dated UNrrn ST TES PATENT @rrrcn.

FRANK A. mnnvcs, or WARREN, OHIO;

CHAIN-LI,NKMDIE.,

' sPEcIrIcA'rIoN formingpart of Letters Patent No. 319,724, dated June 9, 1885.

- Application filed May13, 1884. (No model.) I

To 00 whom, it may concern:

Be it known that I, FRANK A. IDDINGs, of Warren, in the county of Trumbull and State of Ohio, have invented certain new and useful Improvements in Overlapping Ohain-Link- Welding Dies; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as .will enable others skilled in the art to which it pertains to make and use the same. I

My invention relates to overlapping weld,- ing-dies, the object being to provide dies adapted to weld the links of chains, car-coup ling links, or other similar work, and so arranged that each die, when it engages the work, overlaps or reaches beyond the surface of the work that is engaged by other dies of the machine, to the endthat no fins or rough places are left on the work, but the welded part when the work is finished is of equal size as other parts that have not engaged the dies. With these objects in View my invention consists in certain features of construction and in combination of parts, hereinafter described, and pointed out in the claims. These dies are more especially adapted to be operated in a machine fully described in Patents N 0.115, 555,

January 13, 1874, and a description of the machine is therefore not considered necessary in this specification.

In the accompanying drawings, Figure 1 is a side elevation of one of the grasping-dies, with a finished link in position, and showing in vertical section a portion of the link previously welded and the vertical dies and plunger or end die in section. Fig. 2 is a side elevation of one of the grasping-dies,with a blank in position for welding, and in vertical section a portion of the previously-welded link. Fig. 3 is a View in perspective of the grasping or holding die. Fig. 4 is a view in perspective of one of the vertical dies. Fig. 5 is a view in perspective of one of the side dies. Fig. 6 is is a front end elevation of the grasping-dies, with a portion of a finished link in position to receive the blank. Fig. 7 is an elevation of the five dies as would be seen from the front, with the grasping-dies removed and placed as near together as their overlapping parts will admit a position, however, that they.

never assume in working. Fig. 8 is an elevation of the same, with the dies drawn back.

A and A are the grasping or holding dies,

that are opened and closed sidewise and are provided with suitable corresponding grooves,

a and a,,into' which the legs of the blank B are inserted, as shown in Fig. 2, and held firmly by the closing of the dies while the welding is done; The projecting rear end, A servesas'a form over which the ends of the blank are bent, and may be of any desired shape, semicirculan'as shown, or otherwise. If the wire of the blank is square or rectangular in cross-section, the groove of is not required.

G are the vertical dies, that are reciprocated and strike the blank. simultaneously from opsite directions. These dies are curved on their faces to correspond with the form A, and, in case the wire of the blank is of round iron, are grooved, as shown at '0. The groove extends somewhat more than a quarter of a circle in cross-section.

D is the end die, that takes the place of the ordinary heading-die or plunger in forging, and is curved to correspond with the form A", and has a groove, d, corresponding with the groove 0 on the dies 0.

E are the side dies, that are reciprocated horizontally and strike the blank simultaneously on opposite sides. The sides of these dies at e are curved to fit the form A nicely, and have a groove,e on the edge, corresponding in form with the grooves c and d. The parts a of the dies 0 and the parts d of the dies D overlap each other a considerable distance on the surface of the blank. The parts 0 of the dies 0 and the parts d of the dies D, as the dies successively strike the blank, overlap the strokes of each other; also, the edges e of the dies E reach so far round that they engage a portion of the surface of the blank that has been engaged by the dies 0 and D, and by-means of the overlapping of the dies no ridges or fins are made; but the welded part when finished has a smooth surface and corresponds in size with the other parts of the link.

In operating the machine the blank B is in the form A is omitted and thos'eint dies l inserted in the grasping-dies, as shown in Fig. 2. The dies Ofirststrike the protruding ends of the blank, bending them together around the form A and are succeeded, preferably,by the die D, followed by the dies E. The dies follow each other in quick succession, and it requires but a moment. to complete the operation. The grasping-dies are next opened for removing the welded link, after which they are partially closed before receiving the next blank. If the links are to form a chain, the welded link is hung in the recess I made in the front ends of the grasping-dies, and the 1 lower leg of the blank is passed through the last-formed link, as shown in Fig. 2, and the operation of welding is repeated- In case the wire of the blank is square or rectangular, the grooves in the dies. and in the form A" are omitted, and the dies should be of snflicien't J width to extend beyond the edges ofthe blank, so that these edges will be made full. and square. If half-round iron is used, the 'roo've retained.

In my Patent No. 304,526, granted September 2, 1884, I show and describe grasping and shaping dies arranged in pairs, each pair'movl 1 ing in planes at right angles to the other pair,

and each die constructed to overlap or reach I beyond the lines where the adjacent dies en- 1 liar construction of the several dies.

What I claim is- 1. The dies A A, constructed to grasp and hold the blank, and provided at their inner ends with the form A substantially as set forth.

2. The combination, with grasping or holding dies having a projection for supporting a welded link in position for passing one end of 5 a blank through said link, of dies for welding and shaping the blank, substantially as set 3 The combination, with grasping-dies ar- 1 ranged as aforesaid, of the overlapping welding-dies G C D and E E, arranged and oper- I ated asdescribed.

In testimony whereof I sign this specification, in the presence of two witnesses, this 3d day of May, 1884.

FRANK A. IDDINGS.

Witnesses:

GEORGE WITZEL,

FRANK JACOBS. 

